{ "ocl_version": "0.1.0", "name": "Chemin du Prieur\u00e9", "slug": "chemin-du-prieure", "confidence": "A", "reported_claims": [], "ladder": [ { "window_m": 2.0, "max_gradient_pct": 22.98214965594525, "diagnostic": true, "flags": [], "start_distance_m": 1373.0, "end_distance_m": 1375.0, "start_elevation_m": 392.1116031170699, "end_elevation_m": 392.5712461101888, "min_gradient_pct": -11.866148610175742 }, { "window_m": 3.0, "max_gradient_pct": 22.70284392254022, "diagnostic": true, "flags": [], "start_distance_m": 1372.0, "end_distance_m": 1375.0, "start_elevation_m": 391.8901607925126, "end_elevation_m": 392.5712461101888, "min_gradient_pct": -11.197226117803893 }, { "window_m": 5.0, "max_gradient_pct": 22.567044071248574, "diagnostic": false, "flags": [], "start_distance_m": 1370.0, "end_distance_m": 1375.0, "start_elevation_m": 391.44289390662635, "end_elevation_m": 392.5712461101888, "min_gradient_pct": -10.856462565167249 }, { "window_m": 10.0, "max_gradient_pct": 21.713016585027276, "diagnostic": false, "flags": [], "start_distance_m": 1365.0, "end_distance_m": 1375.0, "start_elevation_m": 390.39994445168605, "end_elevation_m": 392.5712461101888, "min_gradient_pct": -10.01637606979557 }, { "window_m": 20.0, "max_gradient_pct": 20.269361718315793, "diagnostic": false, "flags": [], "start_distance_m": 1357.0, "end_distance_m": 1377.0, "start_elevation_m": 388.8624208239479, "end_elevation_m": 392.91629316761106, "min_gradient_pct": -9.657713783824988 }, { "window_m": 25.0, "max_gradient_pct": 20.02074204616156, "diagnostic": false, "flags": [], "start_distance_m": 1351.0, "end_distance_m": 1376.0, "start_elevation_m": 387.7442809729099, "end_elevation_m": 392.7494664844503, "min_gradient_pct": -9.524340257192762 }, { "window_m": 50.0, "max_gradient_pct": 19.119920029650302, "diagnostic": false, "flags": [], "start_distance_m": 1326.0, "end_distance_m": 1376.0, "start_elevation_m": 383.18950646962514, "end_elevation_m": 392.7494664844503, "min_gradient_pct": -8.699771685632868 }, { "window_m": 100.0, "max_gradient_pct": 17.118529618773266, "diagnostic": false, "flags": [], "start_distance_m": 1328.0, "end_distance_m": 1428.0, "start_elevation_m": 383.5504660465601, "end_elevation_m": 400.66899566533334, "min_gradient_pct": -5.62703976010971 } ], "shape": { "ascent_concentration": 0.487, "concentration_window_frac": 0.25, "longest_pitch_10pct_m": 226.0, "shape_class": "stepped" }, "length_m": 1606.5890077556555, "start_elevation_m": 324.9543485571416, "end_elevation_m": 419.19190478565093, "endpoint_gain_m": 94.23755622850933, "overall_gradient_pct": 5.865691584691946, "accumulated_ascent_m": 101.9786038936561, "window_maxima": { "max_5m": { "gradient_pct": 22.567044071248574, "start_distance_m": 1370.0, "end_distance_m": 1375.0, "midpoint_distance_m": 1372.5, "start_elevation_m": 391.44289390662635, "end_elevation_m": 392.5712461101888, "start_xy": [ 933863.9047271711, 6496750.980252749 ], "end_xy": [ 933868.3538481074, 6496748.7013985 ] }, "max_10m": { "gradient_pct": 21.713016585027276, "start_distance_m": 1365.0, "end_distance_m": 1375.0, "midpoint_distance_m": 1370.0, "start_elevation_m": 390.39994445168605, "end_elevation_m": 392.5712461101888, "start_xy": [ 933859.5261147511, 6496753.394326749 ], "end_xy": [ 933868.3538481074, 6496748.7013985 ] }, "max_20m": { "gradient_pct": 20.269361718315793, "start_distance_m": 1357.0, "end_distance_m": 1377.0, "midpoint_distance_m": 1367.0, "start_elevation_m": 388.8624208239479, "end_elevation_m": 392.91629316761106, "start_xy": [ 933852.520334879, 6496757.256845148 ], "end_xy": [ 933870.1482267355, 6496747.818106171 ] }, "max_25m": { "gradient_pct": 20.02074204616156, "start_distance_m": 1351.0, "end_distance_m": 1376.0, "midpoint_distance_m": 1363.5, "start_elevation_m": 387.7442809729099, "end_elevation_m": 392.7494664844503, "start_xy": [ 933847.265999975, 6496760.153733948 ], "end_xy": [ 933869.2510374214, 6496748.259752335 ] }, "max_50m": { "gradient_pct": 19.119920029650302, "start_distance_m": 1326.0, "end_distance_m": 1376.0, "midpoint_distance_m": 1351.0, "start_elevation_m": 383.18950646962514, "end_elevation_m": 392.7494664844503, "start_xy": [ 933825.3729378751, 6496772.224103945 ], "end_xy": [ 933869.2510374214, 6496748.259752335 ] }, "max_100m": { "gradient_pct": 17.118529618773266, "start_distance_m": 1328.0, "end_distance_m": 1428.0, "midpoint_distance_m": 1378.0, "start_elevation_m": 383.5504660465601, "end_elevation_m": 400.66899566533334, "start_xy": [ 933827.124382843, 6496771.258474346 ], "end_xy": [ 933920.3492684115, 6496750.144668941 ] } }, "window_minima": { "min_5m": { "gradient_pct": -10.856462565167249, "start_distance_m": 679.0, "end_distance_m": 684.0, "midpoint_distance_m": 681.5, "start_elevation_m": 357.7723067529287, "end_elevation_m": 357.22948362467037, "start_xy": [ 933632.2331574727, 6497319.733071404 ], "end_xy": [ 933631.9336687787, 6497314.793466082 ] }, "min_10m": { "gradient_pct": -10.01637606979557, "start_distance_m": 677.0, "end_distance_m": 687.0, "midpoint_distance_m": 682.0, "start_elevation_m": 357.95472339644243, "end_elevation_m": 356.9530857894629, "start_xy": [ 933632.2322838379, 6497321.733071213 ], "end_xy": [ 933630.7775604926, 6497312.025178952 ] }, "min_20m": { "gradient_pct": -9.657713783824988, "start_distance_m": 679.0, "end_distance_m": 699.0, "midpoint_distance_m": 689.0, "start_elevation_m": 357.7723067529287, "end_elevation_m": 355.84076399616373, "start_xy": [ 933632.2331574727, 6497319.733071404 ], "end_xy": [ 933626.1531273482, 6497300.952030434 ] }, "min_25m": { "gradient_pct": -9.524340257192762, "start_distance_m": 677.0, "end_distance_m": 702.0, "midpoint_distance_m": 689.5, "start_elevation_m": 357.95472339644243, "end_elevation_m": 355.57363833214424, "start_xy": [ 933632.2322838379, 6497321.733071213 ], "end_xy": [ 933624.997019062, 6497298.1837433055 ] }, "min_50m": { "gradient_pct": -8.699771685632868, "start_distance_m": 675.0, "end_distance_m": 725.0, "midpoint_distance_m": 700.0, "start_elevation_m": 358.10422343907993, "end_elevation_m": 353.7543375962635, "start_xy": [ 933632.231410203, 6497323.733071022 ], "end_xy": [ 933614.2228127349, 6497277.938874232 ] }, "min_100m": { "gradient_pct": -5.62703976010971, "start_distance_m": 672.0, "end_distance_m": 772.0, "midpoint_distance_m": 722.0, "start_elevation_m": 358.2047990464314, "end_elevation_m": 352.5777592863217, "start_xy": [ 933632.2300997507, 6497326.733070736 ], "end_xy": [ 933594.0954379936, 6497235.744884971 ] } }, "diagnostic_window_maxima": { "max_2m": { "gradient_pct": 22.98214965594525, "start_distance_m": 1373.0, "end_distance_m": 1375.0, "midpoint_distance_m": 1374.0, "start_elevation_m": 392.1116031170699, "end_elevation_m": 392.5712461101888, "start_xy": [ 933866.5594694794, 6496749.584690829 ], "end_xy": [ 933868.3538481074, 6496748.7013985 ] }, "max_3m": { "gradient_pct": 22.70284392254022, "start_distance_m": 1372.0, "end_distance_m": 1375.0, "midpoint_distance_m": 1373.5, "start_elevation_m": 391.8901607925126, "end_elevation_m": 392.5712461101888, "start_xy": [ 933865.6622801654, 6496750.026336994 ], "end_xy": [ 933868.3538481074, 6496748.7013985 ] } }, "diagnostic_note": "Windows <=3 m are at raster-noise scale (1-sigma raster noise alone is roughly +/-7 pp at 2 m and +/-5 pp at 3 m on a 1 m DTM). Diagnostic use only: never a headline or ranking value.", "quality_summary": { "overhead_obstruction": { "obstruction_threshold_m": 2.0, "obstructed_fraction": 0.076, "obstruction_max_height_m": 14.17, "flagged_windows_m": [] }, "review": [], "extent": [ "may_continue_beyond_end" ] }, "provenance": { "analysis_version": "0.1.0", "sample_interval_m": 1.0, "interpolation": "bilinear", "smoothing": "none", "gradient_windows_m": [ 5.0, 10.0, 20.0, 25.0, 50.0, 100.0 ], "diagnostic_windows_m": [ 2.0, 3.0 ], "elevation_crs": "EPSG:2154", "elevation_resolution_m": 0.5, "elevation_tiles": [ "data/cache/fr/ign-lidarhd_dtm_E933-N6496_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E933-N6497_0m5.tif", "data/cache/fr/ign-lidarhd_dtm_E934-N6496_0m5.tif" ], "calculated_at": "2026-09-17T04:26:55+00:00", "road_source": "OpenStreetMap (local PBF extract)", "road_attribution": "\u00a9 OpenStreetMap contributors, ODbL", "osm_pbf_path": "data/cache/pbf/block-batch-fr-alps3.osm.pbf", "osm_snapshot": "", "run_id": "fr-alps3", "elevation_provider": "IGN LiDAR HD MNT 0.5 m", "elevation_licence": "Licence Ouverte / Open Licence 2.0 (Etalab) \u2014 \u00a9 IGN, LiDAR HD (MNT/MNS), data.geopf.fr; reproduction autoris\u00e9e avec mention de la source et de la date", "elevation_dataset": "LiDAR HD \u2014 MNT (sol) et MNS (surface), 0,50 m (Institut national de l'information g\u00e9ographique et foresti\u00e8re), RGF93 / Lambert-93 EPSG:2154, altitudes IGN69", "elevation_vertical_datum": "IGN69", "elevation_tile_ids": [ "E933-N6496", "E933-N6497", "E934-N6496" ], "elevation_blocks": [ "21LHD6PL@2025-03-07" ], "ign_dalles": [ "LHD_FXX_0933_6497_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0933_6498_MNT_O_0M50_LAMB93_IGN69", "LHD_FXX_0934_6497_MNT_O_0M50_LAMB93_IGN69" ], "ign_missions": [ "21LHD6PL" ], "ign_editions": [ "2025-03-07" ], "ign_dsm_edition": { "LHD_FXX_0933_6497_MNT_O_0M50_LAMB93_IGN69": "2025-03-07", "LHD_FXX_0933_6498_MNT_O_0M50_LAMB93_IGN69": "2025-03-07", "LHD_FXX_0934_6497_MNT_O_0M50_LAMB93_IGN69": "2025-03-07" }, "climb_origin": "discovered", "structure_own_ways": 6, "carriageway": { "stations": 71, "stations_resolved": 71, "width_median_m": 5.75, "width_p10_m": 2.5, "width_min_m": 1.0, "width_max_m": 12.0, "bounded_share": 0.366, "unbounded_share": 0.634, "confidence_median": 0.0, "width_median_bounded_m": 5.75, "window_m": [ 1351.0, 1376.0 ], "width_at_max25_m": 2.5, "window_stations": 7, "single_track": false, "single_track_rule": "PROVISIONAL (2026-09-15): width_p10_m <= 3.0 m with bounded_share >= 0.6; recorded, not a rule", "status": "ok", "source": "dtm", "station_m": 25.0, "window_station_m": 5.0, "halfwidth_m": 6.0, "step_m": 0.25, "level_tol_m": 0.12, "break_min_m": 0.3, "stations_failed": 0, "hedge_to_hedge": { "stations": 71, "stations_resolved": 71, "width_median_m": 6.5, "width_p10_m": 2.25, "width_min_m": 0.5, "width_max_m": 12.0, "bounded_share": 0.746, "unbounded_share": 0.254, "confidence_median": 1.0, "width_median_bounded_m": 5.5, "window_m": [ 1351.0, 1376.0 ], "width_at_max25_m": 5.5, "window_stations": 7, "status": "ok", "source": "dsm", "station_m": 25.0, "window_station_m": 5.0, "halfwidth_m": 6.0, "step_m": 0.25, "level_tol_m": 0.5, "break_min_m": 0.3, "stations_failed": 0 } }, "license": "ODbL-1.0", "license_url": "https://howsteep.org/licensing" }, "area": { "place": "Saint-Jeoire-Prieur\u00e9", "county": "Savoie", "source": "OpenStreetMap administrative boundaries (\u00a9 OpenStreetMap contributors, ODbL)" } }